CH128165A - Process for the preparation of a dye of the phenonaphtosafranine series. - Google Patents

Process for the preparation of a dye of the phenonaphtosafranine series.

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Publication number
CH128165A
CH128165A CH128165DA CH128165A CH 128165 A CH128165 A CH 128165A CH 128165D A CH128165D A CH 128165DA CH 128165 A CH128165 A CH 128165A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
acid
series
phenonaphtosafranine
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH128165A publication Critical patent/CH128165A/en

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Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Phenonaphtosafraninr        eihe.       Es wurde gefunden,     da,B    ein neuer, wert  voller Farbstoff entsteht, wenn man     1-          Amino-5-methyl-4-monomethylanilin-2-sulf        o-          säure    mit     3-Dimethylisorosindulin-1..    6. 13  trisulfosäure der Formel  
EMI0001.0009     
    kondensiert.

   Die entstandene     Phenonaphto-          safranintrisulfosäure    enthält eine     Sulfo-          gruppe    in     Orthostellung    zum     Safraninstick-          stoff        (-16-Stellung),    wodurch die vorzüg  liche     Alkaliechtheit    der Färbungen bedingt       wird.     



  Der neue Farbstoff ist ein dunkles Pul  ver, das     in    Wasser mit blauer Farbe, in       konzentrierter    Schwefelsäure     grasgrün    lös  lich ist.         Beispiel:     400 Teile einer wässerigen Lösung, ent  haltend 30 Teile     (1/2    Molekül) des Mono  natriumsalzes der     3-Dimethylisorosindulin-          1.    6.

       13-trisulfosäure    und 20 Teile Natrium  azetat     kristallisiert        werden    zusammen mit  einer wässerigen Lösung von 11 Teilen     1-          Amino-5-methyl-4-monomethylanilin-2-sulf        o-          säure    in 80 Teilen Wasser und 3 Teilen Soda  so lange gekocht, bis eine Probe, in konzen  trierter Schwefelsäure gelöst, eine rein grüne  Farbe zeigt. Der mit Kochsalz ausgeschiedene  Farbstoff färbt die animalische Faser aus  saurem Bade licht- und     alkaliecht    blau.  Seine Konstitution ist folgende:  
EMI0001.0035     




  Process for the preparation of a dye of the phenonaphtosafranin series. It has been found that B a new, valuable dye is formed if 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is mixed with 3-dimethylisorosindulin-1 .. 6. 13 trisulfonic acid of the formula
EMI0001.0009
    condensed.

   The resulting phenonaphthosafranin trisulphonic acid contains a sulpho group in the ortho position to the safranine nitrogen (-16 position), which means that the dyeings are particularly fast to alkali.



  The new dye is a dark powder that is blue in water and grass-green in concentrated sulfuric acid. Example: 400 parts of an aqueous solution containing 30 parts (1/2 molecule) of the monosodium salt of 3-dimethylisorosindulin-1. 6.

       13-trisulfonic acid and 20 parts of sodium acetate are crystallized together with an aqueous solution of 11 parts of 1- amino-5-methyl-4-monomethylaniline-2-sulfonic acid in 80 parts of water and 3 parts of soda boiled until one Sample, dissolved in concentrated sulfuric acid, shows a pure green color. The dyestuff excreted with common salt dyes the animal fibers from acidic bath light and alkaline light blue. Its constitution is as follows:
EMI0001.0035

Claims (1)

PATENTANSPRÜCH Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1-Amino-5-methyl-4-monomethylanilin- 2-sulfosäure kondensiert mit 3-Dimethyl- isorosiiidulin-1.6.13-trisulfosäure der For mel EMI0002.0007 Die entstandene Phenonaphtosafranintri- sulfosäure enthält eine Sulfogruppe in Ortho- stellung zum Safraninstickstoff (16-Stel- lung), PATENT CLAIM Process for the preparation of a new dye, characterized in that 1-amino-5-methyl-4-monomethylaniline-2-sulfonic acid is condensed with 3-dimethyl isorosiiidulin-1.6.13-trisulfonic acid of the formula EMI0002.0007 The resulting phenonaphtosafranin trisulfonic acid contains a sulfo group ortho to the safranin nitrogen (16 position), wodurch _ die vorzügliche Alkali echtheit der Färbungen bedingt wird. Der neue Farbstoff ist ein dunkles Pulver, das in Wasser mit blauer Farbe, in konzentrier ter Schwefelsäure grasgrün löslich ist und Wolle aus saurem Bade licht- und alkali- echt blau färbt. which _ determines the excellent alkali fastness of the dyeings. The new dye is a dark powder, which is soluble in water with a blue color, in concentrated sulfuric acid, grass-green and dyes wool from acidic baths light- and alkali-fast blue.
CH128165D 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series. CH128165A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE128165X 1926-02-13
CH124764T 1928-01-28

Publications (1)

Publication Number Publication Date
CH128165A true CH128165A (en) 1928-10-16

Family

ID=25710337

Family Applications (1)

Application Number Title Priority Date Filing Date
CH128165D CH128165A (en) 1926-02-13 1927-02-08 Process for the preparation of a dye of the phenonaphtosafranine series.

Country Status (1)

Country Link
CH (1) CH128165A (en)

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